In-line holography and coherent diffractive imaging with x-ray waveguides (Articolo in rivista)

Type
Label
  • In-line holography and coherent diffractive imaging with x-ray waveguides (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • De Caro L., Giannini C., Pelliccia D., Mocuta C., Metzger T.H., Guagliardi A., Cedola A., Burkeeva I. and Lagomarsino S. (2008)
    In-line holography and coherent diffractive imaging with x-ray waveguides
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • De Caro L., Giannini C., Pelliccia D., Mocuta C., Metzger T.H., Guagliardi A., Cedola A., Burkeeva I. and Lagomarsino S. (literal)
Pagina inizio
  • 081408 (literal)
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  • 77 (literal)
Rivista
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  • Pag. 081408-1,4 (literal)
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  • 4 (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • 1- CNR-IC, Sede di Bari 2- Univ. di Roma \"La Sapienza\", Dip. di Fisica 3- CNR-IFN, Roma 4- ESRF, Grenoble, France (literal)
Titolo
  • In-line holography and coherent diffractive imaging with x-ray waveguides (literal)
Abstract
  • A Fresnel coherent diffraction imaging experiment with hard x rays is here presented, using two planar crossed waveguides as optical elements, leading to a virtual pointlike source. The coherent wave field obtained with this setup is used to illuminate a micrometric single object having the shape of a butterfly. A digital two-dimensional in-line holographic reconstruction of the unknown object at low resolution ?200 nm? has been obtained directly via fast Fourier transform ?FFT? of the raw data. The object and its twin image are well separated because suitable geometrical conditions are satisfied. A good estimate of the incident wave field phase has been extracted directly from the FFT of the raw data. A partial object reconstruction with 50 nm spatial resolution was achieved by fast iterative phase retrieval, the major limitation for a full reconstruction being the nonideal structure of the guided beam. The method offers a route for fast and reliable phase retrieval in x-ray coherent diffraction. (literal)
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